#173A6C#173A6C

#173A6C is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.2% C 0.096 H 257.8°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#173A6C
RGB	rgb(23, 58, 108)
HSL	hsl(215, 65%, 26%)
HSV	hsv(215, 79%, 42%)
CMYK	cmyk(78.7%, 46.3%, 0%, 57.6%)
CIE-LAB	lab(24.61, 6.80, -32.75)
CIE-LCH	lch(24.61, 33.45, 281.74°)
OKLab	oklab(35.2% -0.0203 -0.0938)
OKLCH	oklch(35.2% 0.096 257.8)
XYZ	xyz(4.5722, 4.2905, 14.7716)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A6C #6C4917

analogous

#17646C #173A6C #1E176C

triadic

#173A6C #6C173A #3A6C17

tetradic

#173A6C #6C1764 #6C4917 #176C1E

square

#173A6C #6C1764 #6C4917 #176C1E

split-complementary

#173A6C #6C1E17 #646C17

monochromatic

#050E19 #0C1F3A #173A6C #22559E #2C70D1

Accessibility & contrast

On white

11.30

#173A6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173A6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A6C

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A6C	#FFFFFF	#000000	##FFFFFF
##173A6C	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#213F6E

Deuteranopia (green-blind)

#10376B

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173a6c;
/* rgb */ color: rgb(23, 58, 108);
/* oklch */ color: oklch(35.2% 0.096 257.8);

Tailwind

colors: {
  custom: {
    50: '#616f96',
    500: '#173a6c',
    950: '#000000',
  },
}

SCSS

$custom: #173a6c;
$custom-light: #616f96;
$custom-dark: #000000;

JSON

{
  "hex": "#173a6c",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 108
  },
  "hsl": {
    "h": 215.294,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.35204,
    "c": 0.09594,
    "h": 257.8
  },
  "luminance": 0.04291
}

Semantic roles & 50–950 ramp

primary

#173A6C

secondary

#A2783D

accent

#A340E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #173A6C

Body copy rendered with the generated semantic roles for this colour.

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